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Densities, infrared band strengths, and optical constants of solid methanol

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Densities, infrared band strengths, and optical constants of solid methanol

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dc.contributor.author Luna Molina, Ramón es_ES
dc.contributor.author Molpeceres, Germán es_ES
dc.contributor.author Ortigoso, Juan es_ES
dc.contributor.author Satorre, M. Á. es_ES
dc.contributor.author Domingo Beltran, Manuel es_ES
dc.contributor.author Maté, Belén es_ES
dc.date.accessioned 2020-04-29T07:04:24Z
dc.date.available 2020-04-29T07:04:24Z
dc.date.issued 2018-09 es_ES
dc.identifier.issn 0004-6361 es_ES
dc.identifier.uri http://hdl.handle.net/10251/141946
dc.description.abstract [EN] Contact. The increasing capabilities of space missions like the James Webb Space Telescope or ground-based observatories like the European Extremely Large Telescope demand high quality laboratory data of species in astrophysical conditions for the interpretation of their findings. Aims. We provide new physical and spectroscopic data of solid methanol that will help to identify this species in astronomical environments. Methods. Ices were grown by vapour deposition in high vacuum chambers. Densities were measured via a cryogenic quartz crystal microbalance and laser interferometry. Absorbance infrared spectra of methanol ices of different thickness were recorded to obtain optical constants using an iterative minimization procedure. Infrared band strengths were determined from infrared spectra and ice densities. Results. Solid methanol densities measured at eight temperatures vary between 0.64 g cm(-3) at 20 K and 0.84 g cm(-3 )at 130 K. The visible refractive index at 633 nm grows from 1.26 to 1.35 in that temperature range. New infrared optical constants and band strengths are given from 650 to 5000 cm(-1) (15.4-2.0 mu m) at the same eight temperatures. The study was made on ices directly grown at the indicated temperatures, and amorphous and crystalline phases have been recognized. Our optical constants differ from those previously reported in the literature for an ice grown at 10 K and subsequently warmed. The disagreement is due to different ice morphologies. The new infrared band strengths agree with previous literature data when the correct densities are considered. es_ES
dc.description.sponsorship Funds have been provided for this research by the Spanish MINECO, Project FIS2016-77726-C3-1-P and FIS2016-77726-C3-3-P. German Molpeceres acknowledges MINECO PhD grant BES-2014-069355. We are grateful to R. Escribano for helpful discussions. Our skillful technicians C. Santonja, M. A. Moreno, and J. Rodriguez are also gratefully acknowledged. es_ES
dc.language Inglés es_ES
dc.publisher EDP Sciences es_ES
dc.relation.ispartof Astronomy and Astrophysics es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Solid state: Volatile es_ES
dc.subject Methods: Laboratory es_ES
dc.subject Molecular es_ES
dc.subject Techniques: Spectroscopic es_ES
dc.subject ISM: Abundances es_ES
dc.subject Infrared: ISM es_ES
dc.subject Infrared: planetary systems es_ES
dc.subject.classification FISICA APLICADA es_ES
dc.title Densities, infrared band strengths, and optical constants of solid methanol es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1051/0004-6361/201833463 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//FIS2016-77726-C3-1-P/ES/HIELO, GAS Y POLVO EN ASTROFISICA DE LABORATORIO/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//BES-2014-069355/ES/BES-2014-069355/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//FIS2016-77726-C3-3-P/ES/ICE, GAS AND DUST IN LABORATORY ASTROPHYSICS/ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada es_ES
dc.description.bibliographicCitation Luna Molina, R.; Molpeceres, G.; Ortigoso, J.; Satorre, MÁ.; Domingo Beltran, M.; Maté, B. (2018). Densities, infrared band strengths, and optical constants of solid methanol. Astronomy and Astrophysics. 617:1-9. https://doi.org/10.1051/0004-6361/201833463 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1051/0004-6361/201833463 es_ES
dc.description.upvformatpinicio 1 es_ES
dc.description.upvformatpfin 9 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 617 es_ES
dc.relation.pasarela S\374550 es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES
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